Title : MULTI-LEVEL NUMERICAL SCHEME FOR CALCULATING VERTICAL VELOCITIES IN THE TROPOSPHERE AND STRATOSPHERE,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Galakhova,T. A.

Report Date : 01 JUL 1970

Pagination or Media Count : 17

Abstract : A multi-level numerical scheme, proposed for the calculation of vertical velocities, takes into account 'frontal terms' and the actual stability distribution parameter given. The initial equations include equations for heat influx, eddy velocity, atmospheric statics, state and discontinuity. The solution is derived by simple iteration. Vertical velocities, calculated for each level by the Pyatygina method, are adopted as the first approximations. The method was checked using actual data fed into an electronic computer. The given magnitudes, obtained by the Pyatygina method at 192 grid intersections, and given magnitudes, calculated by the above scheme at 140 grid points on the 50-, 100-, 200-, 300-, 400-, 500-, 700-, and 850-mb surfaces, were fed from the computer. Comparison of the vertical velocities in frontal and anticyclonic areas, obtained by calculating temperature stratification curves, with velocities calculated by other methods, showed that temperatures at all levels could be most accurately calculated by the proposed numerical scheme and that errors in predicting temperatures in frontal areas could be effectively reduced by taking the frontal terms into account. (Author)